Spheerol SY 1501 is an NLGI 1 grade grease with an exceptionally high ISO VG 1500 synthetic base fluid. It is intended for use in plain and rolling element bearings operating at extremely slow speeds, under heavy loads and high temperatures. Spheerol SY 1501 has a recommended operating temperature range of -20°C to 180°C with appropriate re-lubrication intervals.